It is shown that the successive stages of development of the damage caused by a laser beam are the same in technically pure polymethyl methacrylate and the same material containing artificially introduced absorbing particles. The formation of the characteristic flat cracks from gas bubbles in the specimen is observed. The mechanism of fracture development in polymethyl methacrylate is further refined.
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Il'ina, K.N., Kovalev, A.A., Kuznetsov, A.E. et al. Initial stage of laser-induced crack development in polymethyl methacrylate. Polymer Mechanics 7, 491–493 (1971). https://doi.org/10.1007/BF00854813
- Laser Beam
- Polymethyl Methacrylate
- Successive Stage
- Crack Development